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Instalación Postgres

En Distribuciones Debian/Ubuntu

  • Actualizar repositorios
sudo apt-get update
sudo apt-get upgrade
  • Instalar Postgresql en la version actual del repositorios
sudo apt-get install postgresql
  • Recuerde configurar la autenticación de postgresql en el archivo pg_hba.conf
# Para Sistema Operativo Ubuntu 16.04 se instala la version  postgresql 9-5
sudo nano /etc/postgresql/9.5/main/pg_hba.conf

# Para Sistema Operativo Ubuntu 18.04 se instala la version  postgresql 10
sudo nano /etc/postgresql/10/main/pg_hba.conf

Esta configuración solo aplica en ambientes de desarrollo

# DO NOT DISABLE!
# If you change this first entry you will need to make sure that the
# database superuser can access the database using some other method.
# Noninteractive access to all databases is required during automatic
# maintenance (custom daily cronjobs, replication, and similar tasks).
#
# Database administrative login by Unix domain socket
local   all             postgres                                trust

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     trust
# IPv4 local connections:
host    all             all             127.0.0.1/32            trust
# IPv6 local connections:
host    all             all             ::1/128                 trust
# Allow replication connections from localhost, by a user with the
# replication privilege.
#local   replication     postgres                                peer
#host    replication     postgres        127.0.0.1/32            md5
#host    replication     postgres        ::1/128                 md5
  • Reiniciar servicio
sudo service postgresql restart

En Distribuciones Red Hat/Centos

  • Agregar repositorios
sudo rpm -Uvh https://yum.postgresql.org/10/redhat/rhel-7-x86_64/pgdg-centos10-10-2.noarch.rpm
  • Actualizar repositorios
sudo yum install epel-release -y
sudo yum update -y
  • Instalar Postgresql 10 en Centos7
sudo yum install postgresql10-server postgresql10 -y
  • Inicializar PGDATA
sudo /usr/pgsql-10/bin/postgresql-10-setup initdb
  • Iniciar el servidor PostgreSQL y permitir que se inicie al momento de arranque
systemctl start postgresql-10.service
systemctl enable postgresql-10.service
  • Verificar version
sudo su - postgres -c "psql"

# psql (10.0)
# Type "help" for help.
# postgres=#
  • Recuerde configurar la autenticación de postgresql en el archivo pg_hba.conf
sudo nano /var/lib/pgsql/10/data/pg_hba.conf

Esta configuración solo aplica en ambientes de desarrollo

# DO NOT DISABLE!
# If you change this first entry you will need to make sure that the
# database superuser can access the database using some other method.
# Noninteractive access to all databases is required during automatic
# maintenance (custom daily cronjobs, replication, and similar tasks).
#
# Database administrative login by Unix domain socket
local   all             postgres                                trust

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     trust
# IPv4 local connections:
host    all             all             127.0.0.1/32            trust
# IPv6 local connections:
host    all             all             ::1/128                 trust
# Allow replication connections from localhost, by a user with the
# replication privilege.
#local   replication     postgres                                peer
#host    replication     postgres        127.0.0.1/32            md5
#host    replication     postgres        ::1/128                 md5
  • Reiniciar servicio
sudo systemctl restart postgresql-10.service